研究目的
Investigating the design principle of a laser oscillator that provides extended tunability and a flattop output in a wide spectral range.
研究成果
The proposed CVOC technique provides extended tunability for lasers and can be used to achieve a flattop output across almost the entire optical gain spectrum of the active medium. It simplifies and reduces the cost of the output coupler optimization procedure for new laser oscillators.
研究不足
The main disadvantage is the danger of optical damage to the movable mirror, which can be mitigated with appropriate technological approaches.
1：Experimental Design and Method Selection:
The technique involves using a high-reflecting (HR) moving intracavity mirror (scraper) with a sharp edge to partially overlap and extract laser radiation from a high-Q cavity.
2：Sample Selection and Data Sources:
The dye laser with ethanol solution of the dye fenalemine 160 (FN160) was used as the active medium.
3：List of Experimental Equipment and Materials:
High-reflecting wide-band mirrors M1–M3, a 1 mm pinhole (Ph), 60°-glass prisms (P), and a pump radiation focusing lens (FL).
4：Experimental Procedures and Operational Workflow:
The laser cavity was formed by mirrors M1 and M2, with M3 embedded at a 45° angle to extract laser radiation. The laser wavelength was tuned by turning mirror M
5：Data Analysis Methods:
The output energy dependencies versus the effective reflection coefficient were measured and compared with classical experiments using alternately replaced output couplers.
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